Capacitor operating characteristics: Capacitance (or capacitance) is a physical quantity that shows the capacity of a capacitor to hold charge. Capacitors from physics, it is a static charge storage medium, the charge may exist permanently, this is its characteristics, it is widely used, it is an indispensable electronic component in the field of electronics and power. Mainly used in power filter, signal filter, signal coupling, resonance, filter, compensation, charge and discharge, energy storage, DC isolation circuit.
Inductor operating characteristics: Inductor has a certain inductance, which only blocks the change of current. If the inductor is in the state of no current passing through, it will try to prevent the current from flowing through it while the circuit is on; If the inductor is in the state of current passing through, it will try to maintain the current when the circuit is disconnected. Inductors are also called choke, reactor, dynamic reactor.
1, the characteristics of inductance: in contrast to the characteristics of capacitors, it has the characteristics of preventing AC passage and allowing DC smooth passage. The resistance of the DC signal through the coil is that the resistance voltage drop of the guide body itself is small.
When the AC signal passes through the coil, the coil ends will generate self-induced electromotive force. The direction of the self-induced electromotive force is opposite to the direction of the applied voltage, which hinders the passage of AC, so the characteristics of the inductor are DC and resistance AC, the higher the frequency, the greater the coil impedance.
2, the characteristics of the capacitor: the capacitor is composed of the plate at both ends and the insulating dielectric (including air) in the middle. After power, the plate is charged, forming a voltage (potential difference), but because of the insulating material in the middle, the entire capacitor is not conductive.